Developing a voice control system for ZigBee-based home automation networks

This paper presents the design and implementation of a voice control system for ZigBee-based home automation networks. In this system, one or more voice-recognition modules have been added to the ZigBee-based networks. The recognized control messages are sent by these modules then be routed to the target device, and finally be carried out by controlling circuit. In our work, SI-ASR (Speaker-Independent Automatic Speech Recognition) has been used; making it requires no training of recording. This speech recognition control system uses human-computer interaction to realize multiple menu choose function. Also, a function of speech recognition for ordering songs is realized which is based on the SD memory card and its file system on the module. To improve the accuracy of the speech recognition control, button trigger mode, voice password trigger mode and circle recognition mode are provided to be selected, so users can choose different modes under different conditions. A prototype of speech recognition module following the proposed architecture and a simple home automation network has been implemented. Some experimental results validate the basic functions of the proposed system. It turns out to be easy and flexible to control the multiple household appliances for people, especially the elders and people with disabilities, such as quadriplegia patients.